Dust removing and collecting means



Dec. 26, 1922. 1,440,033. J. A. STEVENS ET AL.

' DUST REMOVING AND' COLLECTING MEANS.

FILED SEPT.28, 1918- 2 SHEETS-SHEET 1.

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IN V EN TORS M BY mm %W 1 A ay (,u'A A TTORNEYS.

Dec. 26, 1922.

J. A. STEVENS ET AL.

DUST REMOVING AND COLLECTING MEANS.

2 SHEETS-SHEET 2- FILED SEPT. 28, 1918.

" 1 V TORJ By A m z I J 'RNEYS.

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citizen of of the Swan ported by suitable ceii'leentneall 'ljhe 1mm J,which MM such needs 1 the y Within space '18 1e 17, are me the 7 538"- 7are substantlallv nte die- 3 space to gases a h isexpelle'd iherenm'f'l' er he re 110 iu 'ieeted by I the entering gases ntehoppers'pi'ogases (11st whi space in the manner hin thi .vhelre "6 2ysetfle more "the Rink by con 11) is sine-1 be under immiihen will hes-31 epemt'ionef the g0 ed with flu or tee mmw the by the a prosi-n e um 1ng,

eh rstoed mreed upwardly- -t use, 111 whleh theen- EHOVlTl these reauhlybe until are mn'nmlly in :1

1110 'em'le mu (tie Wit

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eases, whic} 0b 01' othev eeliii. T1 e St-ildklS supported by z 12111.304 carry nets.

. 35 tion and he element e1" H 'e stationary 01' g 1 1e, Whll arereversed, the grooved OHS housing therefor. The steel: may also passthrough a floor 12. The can 1;; soot the cendlt 1d matter, are conductedby fines comm manner W (T In if U m V 0 1 11. S e I a b 1 d n a H 3 1being disposed at 90 apart 3" z 111;: ends tmvm'ds than comp :a 2 m1 9i,dispeseil I 'ihese hoppers m nds b3; pivoted wives nped hopper Jase e"?the stnek. H1611 10 W87. e

funnel sh it the 1 alosed at CLUE,

'l-L in such a um h n ign; m mm. & me e \1 genhally and Lmpart to thegases gases the 50 stack a whirhne meti n in TM ted by closed the othebe open, and versa. The V "weem-a he 01 ed in general h? the 1s (a.ipesed h ave indiea ehuruct 1 the fines 13.

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ereme tion as that caused by the from Whit:

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suitable arm or lever 30. The soot or dust from the lower hopper isdischarged into a suitable chute 81, preferably provided with afunnel-shaped opening 32 at its'upper end for collecting the soot, thesootor dust being discharged at any suitable point by the chute. Thesoot within the hoppers is indicated by the reference numeral 33. Theupper hopper is provided with upwardly swinging doors 34, which arereadily opened in the event that an explosion should occur within thespace between the twohoppers. The lower hopper may also be provided withone or more explosion doors 35 opening upwardly to take care of anexplosion in the spacein the stack below the lower hopper. The carbonwhich is ordinarily carried away by the draft, and the presence of whichis objectionable, is, in accordance with our invention, collected andused, thus conserving the carbon. A ventilating flue 36 furnishescommunication, when desired, between the spaces below the lower hopperand that above the upper hopper, respectively, a suitable valve 86 beingprovided in the lower end of the flue. A ladder 37 may also be providedby'which access may be had by the operator to the parts within thestack. While we have here shown two hoppers for the reception of thedust, di posed one above the other, it will, of course,- be understoodthat a single hopper may be used.

The provision of the double hoppers with the valves inter-connected, inthe manner specified, permits of the removal of the dust withoutdisturbing the draught. Suitable doors 38 are provided in the lowerportion of the stack through which the operator may enter the stack. Themanner in which the soot or other solid matter is re moved from thegases within the stack, collected and removed, will readily be understood from the foregoing description and is as follows:

The gases entering the stack from the flues are given a whirlingmovement in the manner described, the centrifugal force to which theparticles of soot in the gases are thus subjected combined with theupward movement imparted to the particles by the grooved conical memberacting to expel the soot or dust outwardly and upwardly through thespaces between the louvresv 15 into the space 18, in which the gases arein a state of quietude, and from which the dust may settle through thestack into the upper hopper. From the upper hopper the operator, byactuating the valves 25, causes the soot to descend into the lowerhopper, from which it is, discharged into the chute, the bottom of thestack always remaining closed through the described co-action of the twohoppers.

WVhile we have illustrated and described example, as a vehicle which isdriven' through the stack beneath the lower hopper.

What we claim and desire to secure by Letters Patent of the UnitedStates is 2- 1. A draft producing stack having a closed bottom, acylindrical member closed at the bottom and open at the top and locatedwithin the stack above the bottom thereof, said member having its wallsspaced from the walls of the stack and having louvres therein, and aflue arranged to introduce gases within said member and tangentially ofthe walls thereof, whereby dust carried by the gases may pass throughsaid louvres to the bottom of the stack without substantial reduction ofvelocity of the gases. 7

2. A draft producing stack having a normally closed bottom, acylindrical member closed at the bottom and open at the top and locatedwithin the stack above the bottom thereof, said member having its wallsspaced from the walls of the stack and having louvres therein, and aflue arranged to introduce gases within said member an d tangentially ofthe walls thereof, whereby dust carried by the gases may pass throughsaid louvres to the bottom of the stack without substantial reduction ofvelocity of the gases, said bottom being provided with vaives, wherebythe accumulated dust may be removed.

3. A draft producing stack having a normally closed bottom, acylindrical member closed at. the bottom and open at the top and locatedwithin the stack above the bot tom thereof, said member having its wallsspaced from the walls of the stack and having louvres therein, and aflue arranged to introduce gases within said member and tangentially ofthe walls thereof, whereby dust carriedby the gases may pass throughsaid louvres to the bottom of the stack without substantial reduction ofvelocity. of the gases, said bottom being provided with valves, wherebythe accumulated dust n'lay be removed, and a secondary valved bottombelow said normally closed bottom, constructed and arranged to be closedwhen said normally closed bottom opened, whereby a reversed draftthrough the louvres is prevented.

i. A. draft producing stack having a closed bottom, a cylindrical.member closed at the bottom and open at the top and located within thestack above the bottom thereof, said member having its walls spaced fromthe Walls of the stack and having louvres therein, and a flue arrangedto 1n- -troduce'gasesWithin saidmeinber and tangentially oif thewallsthereo'lt',said lo'urr'es eXtencing down to. and opposite the mouth OfSttld l'lue, whereby dust ,carried by the gases may pass through saidlouvres to the bottom of the stack without substantialre duction' o1velocityloi the gases. r

5'.,rl draft producing. stack; a. flue arranged to introduce'gases intothe stack. and tangentially of "the WttllS thereof, and a conical memberlocated centrally of the stack and opposite the mouth of the flue,

with the ape); of the cone 'ab'ovethe level. ot the mouth fol: the flue.I

61A draft:producing: stack, a fine ar- 'anged to introduce gases intothe stack and tangentially oi: the Walls thereotl', and a con- 1calmember located centrallyot the stack and opposite theinouth of flue,with the apex of the cone above the level of the mouth of the flue, thesurface oi the cone walls thereof, and a conical member locatedcentrally in said meniber and opposite the nioutlt otthe flue, Withtheapex of the cone above the level. of the mouth of 'a'iue.

A draft producing stack, a cylindrical member closed. at the bottom andopen at the top and located within the sta ch, said member having itsWalls spaced iz-onrthc Walls of the stack and having louvres therein, aflue arranged tointroduce gases Within said member and tangentially ofthe walls thereof, and a conical member located centrally in. saidmember and opposite the mouth of the fine, with the apex ot the coneaoove the level ol the mouth of the line, the surface of the conebeingprovided With a thread-like, spiral groove.

9. A draft producing stack, a cylindrical member closed at the bottomand open at. the top and located Within the, stack, said member having"its Walls spaced from the walls of the starch and having lourrestherein, a line arranged to introduce gases within said member andtangentially oithe Walls thereo'l'. and a conical member locatedcentrally in said member and opposite the mouth of the line, with theapex of the cone above the level of the mouth 01 the line. said lm irresextending: down to and opposite the mouth of said flue. v

10. A" draft proi'lncina stack harino; a continuous vertical lluetherein. a substan tially horizontal flue connected to said droplinection with said eta; I in the vertical line adjacent the horizontalvertical flue at a point aboveithe bottoni'of the stack and having asubstantially un'ob-:

structed connection With said vertical flue, a normally closeddust-receivingbottom beneath said FYL bottom ()i th aclr and thehorizontal flue, and means inner )y the dusta'eceivin bot- 11 Refill tproducing stack ha tinuous vertical flue therein, a substantniillyhorizontal flue connected to said vertical,

ica'l flue/and between "the flue at al point above the bottom of thestaclz and having; a substantially unobstructed con flue entrance, anormally closed dust-receiw ing bottom beneath said vertical flue andbetween the bottom of the stack and the horizontal flue, and-meanswhereby the dustreceiving bottom may opened to permit the dust to vice;a 12. A draft producing stack havinga continuous vertical flue therein,a substantially horizontal gas flue connected to s'aidvertica flue at apoint abovethe bottom ofthe stack and having a substantiallyunobstructed connection With said vertical flue, a pair of normallyclosed dust-receiving bottoms spaced" l t, a dust separator drop intorh'ist coni 'eying deapart and located beneath said vertical'fiue andbetween the bottom of the stack and horizontal flue entrance, and meanswhereby 13. A. draftproducilw stack having a con- ('3tinuouslrerticallti'ue therein, a substantially horizontal flueconnected to said vertical flue at; a point above the "botton ol hestack and having a substantially unobstructed connection with saidvertical flue, a dust separator in the vertical fine adjacent thehorizontal flue entrance, a pair of normally closed dust-receivingbottoms spaced apart and located beneath said vertical hue and betweenthe bottom of the stack and the horizontal flue entrance, andrneanswhereby the dust-receiving bottoms may be opened to permit the dust toing device. I r

14, A draft producing stack having a continuous vertical tlue therein, asubstantially horlzontal gas flue connected to said vertical flue at apoint above the bottom of the stack and having a substantiallyunobstructed coni drop into a dust-conveyroo dust-conveying device, saidmeans comprising a valve in'each dust-receiving bottom,

said valves being interconnected to prevent the opening of one valve;until the other valve-is closed. 15. A draft producing stack having acontinuous verticaluluetherein, a substantially llOIlZOIltEtl gas flueconnected to sald vertical verticalflue and between the'bottom. of the.

stack and the horizontal flue, and means whereby the'dust-receivingbottom may be opened to permit the dust tolfall into and be removed by avehicle, moved through the stack beneath the dust-receiving bottonn 16.A draft producing stackhaving a con-v horizontal gas-flue connected tosaid vertlcal tinuous vertical flue therein,-a substantially horizontalgas flue connected to, said vertical flue at apoint abovethe bottom of:the stack and havinga-substantially unobstructed con.

nectjiqn with said vertical flue, a dust separator in the vertical flueadjacent the horizontal. flue entrance, a normally closed dustreceivingbottom beneath said. vertical flue.

andbetween the bottom of the stack and the horizontal flue, and. meanswhereby the dust,

receiving'bottom may be opened to permit the-dust to fall into andberemoved by a vehicle moved through. the stack beneath the dust-receivingbottom.

17 .A draft-producing stack having a continuous vertical. flue therein,a substantially I horizontalgas flue connected to said vertical flue ata point above the bottom of the stack and having a substantiallyunobstructed connection with said. vertical flue, a pair of normallyclosed dustq'eceiving' bottoms spaced'apart and located beneath saidvertical flueiand between the bottom. of the stack andthe horizontalflue entrance, and means whereby thedust-re'ceiving bottoms may beopened to'permit the dust to fall into i and be removed by a vehiclemoved through normally closed dust-receiving bottom beneath said"vertical flue and between the bottom .of the stackand the horizontalflue, and

means whereby the dust-receiving bottom gential connection with saidvertical flue, a A

may be opened to permit the dust to drop v into a dust-conveying device.

19. A draft producing stack having a continuous vertical flue therein, asubstantially flue at a point above the "bottom of the stack and havinga substantially unobstructed connection'with said verticalfluearrangedto cause the column of gasesin the stack to 1'0- tate as thegases pass upward, a normally closed dust-receiving bottom beneath saidvertical flue and between the bottom of the stack and the horizontalflue, and means whereby the dust-receivingbottom may be opened to permitthe dust to drop into. a.

dust-conveying device. In testimony whereof we have hereunto signed ournames in the presence of two subscribing witnesses.

. JOHN A. STEVENS. .ARTHUR D. PRATT. Witnesses to the signature of JohnA; Stevensi Jot-1N A. W. DIXON, D. S. Jnoonos. WVitnesses to thesignature oi? Arthur D.

' Jenn A. W. DIXON,

;NA'IHAN E. LEWIS.

